By the same method, the energy of fusion for other reactions
can be evaluated. We have
D + T ®4He + n + 17.6 MeV

D + 3He ®4He + p + 18.4 MeV

D + D ®3He + n + 3.3 MeV

D + D ®3T + p + 4.0 MeV

From engineering point of view, the most favourable fusion reaction to
consider is the D + T fusion, because its cross section is much higher
than that of D + 3He fusion, although the latter releases
a little more energy.